Home / 22,340.78-30,830.13-12,269.37

Finding the Fourth Proportional to 22,340.78, 30,830.13 and 12,269.37

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Solution

The fourth proportional to 22,340.78, 30,830.13 and 12,269.37 is: 16,931.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,340.78 : 30,830.13 = 12,269.37 : x
  2. Step 2: Convert to fraction form
    22,340.78/30,830.13 = 12,269.37/x
  3. Step 3: Cross multiply
    22,340.78x = 30,830.13 × 12,269.37
  4. Step 4: Simplify right side
    22,340.78x = 378,266,272.12
  5. Step 5: Solve for x
    x = 378,266,272.12/22,340.78
  6. Step 6: Final answer
    x = 16,931.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.